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Neodymium

☒

Actinium

☒

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Neodymium

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Actinium

Physical Properties of Neodymium and Actinium

Neodymium Metal

Neodymium

Actinium Metal

Actinium

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1 Physical

1.1 Melting Point

1,010.00 °C1,227.00 °C

27 3410

1.2 Boiling Point

3,127.00 °C3,200.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Silvery White

1.3.3 Luster

Metallic

NA

1.4 Hardness

1.4.1 Mohs Hardness

NANA

0.2 8.5

1.4.2 Brinell Hardness

265.00 MPaNA

0.14 3490

1.4.3 Vickers Hardness

345.00 MPaNA

121 3430

1.5 Speed of Sound

2,330.00 m/sNA

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NANA

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Not Available

Not Available

1.7.2 β Allotropes

Not Available

Not Available

1.7.3 γ Allotropes

Not Available

Not Available

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